Writing a File to the Specified Folder

Question

This question is in conjunction with my other: Write a text file to a sub-folder .

This time, I have a program that has a text folder to open a file, then extract data from that file. Then I can save it by saying where to save it.

private void btnExtract1_Click(object sender, EventArgs e)
{
    btnExtract1.Enabled = false;
    string path = txtSave1.Text;

    string file1;
    using (StreamReader reader = new StreamReader(File.OpenRead(txtFile1.Text)))
    using (StreamWriter writer = new StreamWriter(path))
    {
        while ((file1 = reader.ReadLine()) != null)
        {
            file1 = file1.Replace("\"", string.Empty);
            file1 = file1.Substring(0, 8);

            line_number1 += 1;

            if (line_number1 >= 1)
            {
                writer.WriteLine(file1);
            }
        }
    }
    btnExtract1.Enabled = true;
}

private void btnSave1_Click(object sender, EventArgs e)
{
    DialogResult result = savefile1.ShowDialog();
    txtSave1.Text = savefile1.FileName;
}

No it is not saving in that folder. In fact, it breaks at:

using (StreamWriter writer = new StreamWriter(path))

With this error:

A first chance exception of type 'System.IO.DirectoryNotFoundException' occurred in mscorlib.dll

What could possibly be wrong?

Answer 1

Did you check how your path looks like? Maybe you're not escaping the \\ properly or you have some invalid characters inside your path.

Answer 2

I made a rookie mistake, where I forgot to say what file it is to save as.

using (StreamWriter writer = new StreamWriter(path))

Where path is equal to whatever the user wants it as - in my case it was set to C:\\temp\\ . I haven't set the SaveFileDialog to save as any default name.